Up to 80 percent of all strokes are preventable through lifestyle factors such as diet, exercise, maintaining a healthy weight, normalizing your blood sugar levels and blood pressure, and quitting smoking

Recent research shows that those with vitamin C deficiency are at an increased risk for hemorrhagic stroke. In an earlier study, people with high blood levels of vitamin C reduced their stroke risk by 42 percent

Research also suggests that iron deficiency can increase your risk of ischemic stroke if you have hereditary hemorrhagic telangiectasia, a hereditary disease that causes enlarged blood vessels in your lungs